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TI-2026-33964 Aliases CVE-2026-46243GHSA-3mg7-pfmq-9qfv

smb: client: reject userspace cifs.spnego descriptions

Priority HIGH 69CWE-20Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat.

Summary

In the Linux kernel, the following vulnerability has been resolved: smb: client: reject userspace cifs.spnego descriptions cifs.spnego key descriptions contain authority-bearing fields such as pid, uid, creduid, and upcall_target that cifs.upcall treats as kernel-originating inputs. However, userspace can also create keys of this type through request_key(2) or add_key(2), allowing those fields to be supplied without CIFS origin. Only accept cifs.spnego descriptions while CIFS is using its private spnego_cred to request the key.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00413 35th percentileScored 2026-11-07
Fix Fixed Linux (Linux): 5.10.258, 5.15.209, 6.1.175 +5Red Hat: 34 advisories

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
LinuxLinux2.6.24 and later5.10.258, 5.15.209, 6.1.175, 6.6.142, 6.12.92, 6.18.34, 7.0.11, 7.1Patch availableCNA
  • Linux VendorLinux Affected 2.6.24 and later Fixed in 5.10.258, 5.15.209, 6.1.175, 6.6.142, 6.12.92, 6.18.34, 7.0.11, 7.1 Patch available CNA

CPE configurations NVD · 12

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*2.6.24.1 to before 5.10.258; 5.11 to before 5.15.209; 5.16 to before 6.1.175; 6.2 to before 6.6.142; 6.7 to before 6.12.92; 6.13 to before 6.18.34; 6.19 to before 7.0.11VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.6.24:-:*:*:*:*:*:*2.6.24VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.6.24:rc3:*:*:*:*:*:*2.6.24 rc3VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.6.24:rc4:*:*:*:*:*:*2.6.24 rc4VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.6.24:rc5:*:*:*:*:*:*2.6.24 rc5VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.6.24:rc6:*:*:*:*:*:*2.6.24 rc6VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.6.24:rc7:*:*:*:*:*:*2.6.24 rc7VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.6.24:rc8:*:*:*:*:*:*2.6.24 rc8VulnerableLinux
cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:*7.1 rc1VulnerableLinux
cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:*7.1 rc2VulnerableLinux
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 2.6.24.1 to before 5.10.258; 5.11 to before 5.15.209; 5.16 to before 6.1.175; 6.2 to before 6.6.142; 6.7 to before 6.12.92; 6.13 to before 6.18.34; 6.19 to before 7.0.11 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.6.24:-:*:*:*:*:*:* Versions 2.6.24 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.6.24:rc3:*:*:*:*:*:* Versions 2.6.24 rc3 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.6.24:rc4:*:*:*:*:*:* Versions 2.6.24 rc4 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.6.24:rc5:*:*:*:*:*:* Versions 2.6.24 rc5 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.6.24:rc6:*:*:*:*:*:* Versions 2.6.24 rc6 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.6.24:rc7:*:*:*:*:*:* Versions 2.6.24 rc7 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.6.24:rc8:*:*:*:*:*:* Versions 2.6.24 rc8 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:* Versions 7.1 rc1 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:* Versions 7.1 rc2 Vulnerable ·Linux
Show 2 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:7.1:rc3:*:*:*:*:*:*7.1 rc3VulnerableLinux
cpe:2.3:o:linux:linux_kernel:7.1:rc4:*:*:*:*:*:*7.1 rc4VulnerableLinux
  • cpe:2.3:o:linux:linux_kernel:7.1:rc3:*:*:*:*:*:* Versions 7.1 rc3 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:7.1:rc4:*:*:*:*:*:* Versions 7.1 rc4 Vulnerable ·Linux

Remediation

  • Fix · CNA Linux (Linux) Fixed in 5.10.258, 5.15.209, 6.1.175, 6.6.142, 6.12.92, 6.18.34, 7.0.11, 7.1

Red Hat 34 advisories

  • RHSA-2026:47727 Released 2026-08-06 · Red Hat rating Important
    OpenShift Container Platform 4.17.56 bug fix and security update
    • Red Hat OpenShift Container Platform 4.17 rhcos-aarch64-417.94.202607240132-0, rhcos-ppc64le-417.94.202607240132-0, rhcos-s390x-417.94.202607240132-0 +1
  • RHSA-2026:40021 Released 2026-07-23 · Red Hat rating Important
    OpenShift Container Platform 4.13.69 bug fix and security update
    • Red Hat OpenShift Container Platform 4.13 rhcos-x86_64-413.92.202607141229-0
  • RHSA-2026:41236 Released 2026-07-17 · Red Hat rating Critical
    kernel-rt security, bug fix, and enhancement update
    • Red Hat Enterprise Linux for Real Time (v. 7 ELS) kernel-rt-3.10.0-1160.155.1.rt56.1307.el7, kernel-rt-debug-3.10.0-1160.155.1.rt56.1307.el7, kernel-rt-debug-devel-3.10.0-1160.155.1.rt56.1307.el7 +4
Show 31 more Red Hat advisories
  • RHSA-2026:36620 Released 2026-07-16 · Red Hat rating Important
    OpenShift Container Platform 4.16.66 bug fix and security update
    • Red Hat OpenShift Container Platform 4.16 rhcos-aarch64-416.94.202607021016-0, rhcos-ppc64le-416.94.202607021016-0, rhcos-s390x-416.94.202607021016-0 +1
  • RHSA-2026:34048 Released 2026-07-09 · Red Hat rating Important
    OpenShift Container Platform 4.12.93 bug fix and security update
    • Red Hat OpenShift Container Platform 4.12 rhcos-x86_64-412.86.202606251120-0
  • RHSA-2026:34757 Released 2026-07-09 · Red Hat rating Moderate
    OpenShift Container Platform 4.19.37 bug fix and security update
    • Red Hat OpenShift Container Platform 4.19 rhcos-aarch64-4.19.9.6.202606302000-0, rhcos-ppc64le-4.19.9.6.202606302000-0, rhcos-s390x-4.19.9.6.202606302000-0 +1
  • RHSA-2026:34815 Released 2026-07-08 · Red Hat rating Important
    OpenShift Container Platform 4.18.47 bug fix and security update
    • Red Hat OpenShift Container Platform 4.18 rhcos-aarch64-418.94.202606250458-0, rhcos-ppc64le-418.94.202606250458-0, rhcos-s390x-418.94.202606250458-0 +1
  • RHSA-2026:34764 Released 2026-07-07 · Red Hat rating Important
    OpenShift Container Platform 4.21.23 bug fix and security update
    • Red Hat OpenShift Container Platform 4.21 rhcos-aarch64-4.21.9.6.202607011303-0, rhcos-ppc64le-4.21.9.6.202607011303-0, rhcos-s390x-4.21.9.6.202607011303-0 +1
  • RHSA-2026:34788 Released 2026-07-07 · Red Hat rating Important
    OpenShift Container Platform 4.20.28 bug fix and security update
    • Red Hat OpenShift Container Platform 4.20 rhcos-aarch64-4.20.9.6.202607010620-0, rhcos-ppc64le-4.20.9.6.202607010620-0, rhcos-s390x-4.20.9.6.202607010620-0 +1
  • RHSA-2026:28962 Released 2026-07-06 · Red Hat rating Critical
    OpenShift Container Platform 4.15.66 bug fix and security update
    • Red Hat OpenShift Container Platform 4.15 rhcos-aarch64-415.92.202606200237-0, rhcos-ppc64le-415.92.202606200237-0, rhcos-s390x-415.92.202606200237-0 +1
  • RHSA-2026:28887 Released 2026-07-01 · Red Hat rating Critical
    OpenShift Container Platform 4.14.68 bug fix and security update
    • Red Hat OpenShift Container Platform 4.14 rhcos-aarch64-414.92.202606231112-0, rhcos-ppc64le-414.92.202606231112-0, rhcos-s390x-414.92.202606231112-0 +1
  • RHSA-2026:33486 Released 2026-06-30 · Red Hat rating Critical
    kernel security, bug fix, and enhancement update
    • NVIDIA for RHEL 10 kernel-6.12.0-231.12.el10nv, kernel-64k-6.12.0-231.12.el10nv, kernel-64k-core-6.12.0-231.12.el10nv +32
  • RHSA-2026:33225 Released 2026-06-29 · Red Hat rating Important
    kpatch-patch-6_12_0-211_16_1 security update
    • Red Hat Enterprise Linux BaseOS (v. 10) kpatch-patch-6_12_0-211_16_1-1-2.el10_2
  • RHSA-2026:33224 Released 2026-06-29 · Red Hat rating Important
    kpatch-patch-5_14_0-687_10_1 security update
    • Red Hat Enterprise Linux BaseOS (v. 9) kpatch-patch-5_14_0-687_10_1-1-2.el9_8
  • RHSA-2026:33223 Released 2026-06-29 · Red Hat rating Important
    kpatch-patch-5_14_0-570_116_1, kpatch-patch-5_14_0-570_17_1, kpatch-patch-5_14_0-570_39_1, kpatch-patch-5_14_0-570_66_1, and kpatch-patch-5_14_0-570_94_1 security update
    • Red Hat Enterprise Linux BaseOS EUS (v.9.6) kpatch-patch-5_14_0-570_116_1-1-2.el9_6, kpatch-patch-5_14_0-570_17_1-1-17.el9_6, kpatch-patch-5_14_0-570_39_1-1-8.el9_6 +2
  • RHSA-2026:33220 Released 2026-06-29 · Red Hat rating Important
    kpatch-patch-4_18_0-553_109_1, kpatch-patch-4_18_0-553_125_1, kpatch-patch-4_18_0-553_53_1, kpatch-patch-4_18_0-553_72_1, and kpatch-patch-4_18_0-553_85_1 security update
    • Red Hat Enterprise Linux BaseOS (v. 8) kpatch-patch-4_18_0-553_109_1-1-5.el8_10, kpatch-patch-4_18_0-553_125_1-1-2.el8_10, kpatch-patch-4_18_0-553_53_1-1-12.el8_10 +2
  • RHSA-2026:33222 Released 2026-06-29 · Red Hat rating Important
    kpatch-patch-5_14_0-427_100_1, kpatch-patch-5_14_0-427_113_1, kpatch-patch-5_14_0-427_126_1, kpatch-patch-5_14_0-427_68_2, and kpatch-patch-5_14_0-427_84_1 security update
    • Red Hat Enterprise Linux BaseOS E4S (v.9.4) kpatch-patch-5_14_0-427_100_1-1-7.el9_4, kpatch-patch-5_14_0-427_113_1-1-5.el9_4, kpatch-patch-5_14_0-427_126_1-1-2.el9_4 +2
  • RHSA-2026:33219 Released 2026-06-29 · Red Hat rating Important
    kpatch-patch-4_18_0-477_107_1, kpatch-patch-4_18_0-477_120_1, kpatch-patch-4_18_0-477_130_1, kpatch-patch-4_18_0-477_143_1, and kpatch-patch-4_18_0-477_97_1 security update
    • Red Hat Enterprise Linux BaseOS E4S (v.8.8) kpatch-patch-4_18_0-477_107_1-1-8.el8_8, kpatch-patch-4_18_0-477_120_1-1-7.el8_8, kpatch-patch-4_18_0-477_130_1-1-5.el8_8 +2
  • RHSA-2026:33221 Released 2026-06-29 · Red Hat rating Important
    kpatch-patch-5_14_0-284_117_1, kpatch-patch-5_14_0-284_134_1, kpatch-patch-5_14_0-284_148_1, kpatch-patch-5_14_0-284_158_1, and kpatch-patch-5_14_0-284_172_1 security update
    • Red Hat Enterprise Linux BaseOS E4S (v.9.2) kpatch-patch-5_14_0-284_117_1-1-15.el9_2, kpatch-patch-5_14_0-284_134_1-1-9.el9_2, kpatch-patch-5_14_0-284_148_1-1-7.el9_2 +2
  • RHSA-2026:27708 Released 2026-06-22 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • Red Hat CodeReady Linux Builder EUS (v.9.6) kernel-tools-libs-devel-5.14.0-570.123.1.el9_6, libperf-5.14.0-570.123.1.el9_6
    • Red Hat Enterprise Linux AppStream EUS (v.9.6) kernel-64k-debug-devel-5.14.0-570.123.1.el9_6, kernel-64k-debug-devel-matched-5.14.0-570.123.1.el9_6, kernel-64k-devel-5.14.0-570.123.1.el9_6 +12
    • Red Hat Enterprise Linux BaseOS EUS (v.9.6) kernel-5.14.0-570.123.1.el9_6, kernel-64k-5.14.0-570.123.1.el9_6, kernel-64k-core-5.14.0-570.123.1.el9_6 +28
    • Red Hat Enterprise Linux Real Time EUS (v.9.6) kernel-rt-5.14.0-570.123.1.el9_6, kernel-rt-64k-5.14.0-570.123.1.el9_6, kernel-rt-64k-core-5.14.0-570.123.1.el9_6 +21
    • Red Hat Enterprise Linux Real Time for NFV EUS (v.9.6) kernel-rt-5.14.0-570.123.1.el9_6, kernel-rt-core-5.14.0-570.123.1.el9_6, kernel-rt-debug-5.14.0-570.123.1.el9_6 +11
  • RHSA-2026:27735 Released 2026-06-22 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream E4S (v.9.4) kernel-64k-debug-devel-5.14.0-427.132.1.el9_4, kernel-64k-debug-devel-matched-5.14.0-427.132.1.el9_4, kernel-64k-devel-5.14.0-427.132.1.el9_4 +11
    • Red Hat Enterprise Linux BaseOS E4S (v.9.4) bpftool-7.3.0-427.132.1.el9_4, kernel-5.14.0-427.132.1.el9_4, kernel-64k-5.14.0-427.132.1.el9_4 +29
    • Red Hat Enterprise Linux Real Time E4S (v.9.4) kernel-rt-5.14.0-427.132.1.el9_4, kernel-rt-core-5.14.0-427.132.1.el9_4, kernel-rt-debug-5.14.0-427.132.1.el9_4 +9
    • Red Hat Enterprise Linux Real Time for NFV E4S (v.9.4) kernel-rt-5.14.0-427.132.1.el9_4, kernel-rt-core-5.14.0-427.132.1.el9_4, kernel-rt-debug-5.14.0-427.132.1.el9_4 +11
  • RHSA-2026:27729 Released 2026-06-22 · Red Hat rating Critical
    kernel security, bug fix, and enhancement update
    • Red Hat Enterprise Linux Server (v. 7 ELS) bpftool-3.10.0-1160.153.1.el7, kernel-3.10.0-1160.153.1.el7, kernel-abi-whitelists-3.10.0-1160.153.1.el7 +11
    • Red Hat Enterprise Linux Server Optional (v. 7 ELS) kernel-debug-devel-3.10.0-1160.153.1.el7, kernel-tools-libs-devel-3.10.0-1160.153.1.el7
  • RHSA-2026:27719 Released 2026-06-22 · Red Hat rating Critical
    kernel security update
    • Red Hat Enterprise Linux Server -EXTENSION(v. 6 ELS-EXTENSION) kernel-2.6.32-754.61.1.el6, kernel-abi-whitelists-2.6.32-754.61.1.el6, kernel-debug-2.6.32-754.61.1.el6 +7
    • Red Hat Enterprise Linux Server Optional -EXTENSION (v. 6 ELS -EXTENSION) python-perf-2.6.32-754.61.1.el6
  • RHSA-2026:26570 Released 2026-06-17 · Red Hat rating Important
    kernel security update
    • Red Hat Enterprise Linux BaseOS AUS (v.8.6) bpftool-4.18.0-372.196.1.el8_6, kernel-4.18.0-372.196.1.el8_6, kernel-abi-stablelists-4.18.0-372.196.1.el8_6 +14
    • Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.6) bpftool-4.18.0-372.196.1.el8_6, kernel-4.18.0-372.196.1.el8_6, kernel-abi-stablelists-4.18.0-372.196.1.el8_6 +14
  • RHSA-2026:26563 Released 2026-06-17 · Red Hat rating Important
    kernel security update
    • Red Hat Enterprise Linux BaseOS E4S (v.8.8) bpftool-4.18.0-477.147.1.el8_8, kernel-4.18.0-477.147.1.el8_8, kernel-abi-stablelists-4.18.0-477.147.1.el8_8 +14
    • Red Hat Enterprise Linux BaseOS TUS (v.8.8) bpftool-4.18.0-477.147.1.el8_8, kernel-4.18.0-477.147.1.el8_8, kernel-abi-stablelists-4.18.0-477.147.1.el8_8 +14
  • RHSA-2026:26535 Released 2026-06-17 · Red Hat rating Critical
    kernel security, bug fix, and enhancement update
    • Red Hat Enterprise Linux BaseOS AUS (v.8.4) bpftool-4.18.0-305.194.1.el8_4, kernel-4.18.0-305.194.1.el8_4, kernel-abi-stablelists-4.18.0-305.194.1.el8_4 +14
    • Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4) bpftool-4.18.0-305.194.1.el8_4, kernel-4.18.0-305.194.1.el8_4, kernel-abi-stablelists-4.18.0-305.194.1.el8_4 +14
  • RHSA-2026:26515 Released 2026-06-17 · Red Hat rating Important
    kernel security update
    • Red Hat Enterprise Linux AppStream E4S (v.9.2) kernel-64k-debug-devel-5.14.0-284.176.1.el9_2, kernel-64k-debug-devel-matched-5.14.0-284.176.1.el9_2, kernel-64k-devel-5.14.0-284.176.1.el9_2 +10
    • Red Hat Enterprise Linux BaseOS E4S (v.9.2) bpftool-7.0.0-284.176.1.el9_2, kernel-5.14.0-284.176.1.el9_2, kernel-64k-5.14.0-284.176.1.el9_2 +29
  • RHSA-2026:26462 Released 2026-06-17 · Red Hat rating Important
    kernel-rt security update
    • Red Hat Enterprise Linux Real Time E4S (v.9.2) kernel-rt-5.14.0-284.176.1.rt14.461.el9_2, kernel-rt-core-5.14.0-284.176.1.rt14.461.el9_2, kernel-rt-debug-5.14.0-284.176.1.rt14.461.el9_2 +9
    • Red Hat Enterprise Linux Real Time for NFV E4S (v.9.2) kernel-rt-5.14.0-284.176.1.rt14.461.el9_2, kernel-rt-core-5.14.0-284.176.1.rt14.461.el9_2, kernel-rt-debug-5.14.0-284.176.1.rt14.461.el9_2 +11
  • RHSA-2026:25908 Released 2026-06-15 · Red Hat rating Important
    kernel security update
    • Red Hat Enterprise Linux AppStream EUS (v. 10.0) kernel-64k-debug-devel-6.12.0-55.79.1.el10_0, kernel-64k-debug-devel-matched-6.12.0-55.79.1.el10_0, kernel-64k-devel-6.12.0-55.79.1.el10_0 +12
    • Red Hat Enterprise Linux BaseOS EUS (v. 10.0) kernel-6.12.0-55.79.1.el10_0, kernel-64k-6.12.0-55.79.1.el10_0, kernel-64k-core-6.12.0-55.79.1.el10_0 +28
    • Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) kernel-tools-libs-devel-6.12.0-55.79.1.el10_0, libperf-6.12.0-55.79.1.el10_0
    • Red Hat Enterprise Linux Real Time EUS (v. 10.0) kernel-rt-6.12.0-55.79.1.el10_0, kernel-rt-64k-6.12.0-55.79.1.el10_0, kernel-rt-64k-core-6.12.0-55.79.1.el10_0 +21
    • Red Hat Enterprise Linux Real Time for NFV EUS (v. 10.0) kernel-rt-6.12.0-55.79.1.el10_0, kernel-rt-core-6.12.0-55.79.1.el10_0, kernel-rt-debug-6.12.0-55.79.1.el10_0 +11
  • RHSA-2026:24381 Released 2026-06-08 · Red Hat rating Important
    kernel security update
    • Red Hat Enterprise Linux AppStream (v. 9) kernel-64k-debug-devel-5.14.0-687.13.1.el9_8, kernel-64k-debug-devel-matched-5.14.0-687.13.1.el9_8, kernel-64k-devel-5.14.0-687.13.1.el9_8 +12
    • Red Hat Enterprise Linux BaseOS (v. 9) kernel-5.14.0-687.13.1.el9_8, kernel-64k-5.14.0-687.13.1.el9_8, kernel-64k-core-5.14.0-687.13.1.el9_8 +28
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) kernel-tools-libs-devel-5.14.0-687.13.1.el9_8, libperf-5.14.0-687.13.1.el9_8
    • Red Hat Enterprise Linux Real Time (v. 9) kernel-rt-5.14.0-687.13.1.el9_8, kernel-rt-64k-5.14.0-687.13.1.el9_8, kernel-rt-64k-core-5.14.0-687.13.1.el9_8 +21
    • Red Hat Enterprise Linux Real Time for NFV (v. 9) kernel-rt-5.14.0-687.13.1.el9_8, kernel-rt-core-5.14.0-687.13.1.el9_8, kernel-rt-debug-5.14.0-687.13.1.el9_8 +9
  • RHSA-2026:23395 Released 2026-06-04 · Red Hat rating Important
    kernel security update
    • NVIDIA for RHEL 10 kernel-6.12.0-212.9.el10nv, kernel-64k-6.12.0-212.9.el10nv, kernel-64k-core-6.12.0-212.9.el10nv +32
  • RHSA-2026:23329 Released 2026-06-04 · Red Hat rating Important
    kernel security update
    • Red Hat Enterprise Linux AppStream (v. 10) kernel-64k-debug-devel-6.12.0-211.20.1.el10_2, kernel-64k-debug-devel-matched-6.12.0-211.20.1.el10_2, kernel-64k-devel-6.12.0-211.20.1.el10_2 +12
    • Red Hat Enterprise Linux BaseOS (v. 10) kernel-6.12.0-211.20.1.el10_2, kernel-64k-6.12.0-211.20.1.el10_2, kernel-64k-core-6.12.0-211.20.1.el10_2 +29
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) kernel-tools-libs-devel-6.12.0-211.20.1.el10_2, libperf-6.12.0-211.20.1.el10_2
    • Red Hat Enterprise Linux Real Time (v. 10) kernel-rt-6.12.0-211.20.1.el10_2, kernel-rt-64k-6.12.0-211.20.1.el10_2, kernel-rt-64k-core-6.12.0-211.20.1.el10_2 +21
    • Red Hat Enterprise Linux Real Time for NFV (v. 10) kernel-rt-6.12.0-211.20.1.el10_2, kernel-rt-core-6.12.0-211.20.1.el10_2, kernel-rt-debug-6.12.0-211.20.1.el10_2 +9
  • RHSA-2026:23258 Released 2026-06-04 · Red Hat rating Important
    kernel security update
    • Red Hat Enterprise Linux BaseOS (v. 8) bpftool-4.18.0-553.129.1.el8_10, kernel-4.18.0-553.129.1.el8_10, kernel-abi-stablelists-4.18.0-553.129.1.el8_10 +19
    • Red Hat Enterprise Linux CRB (v. 8) kernel-tools-libs-devel-4.18.0-553.129.1.el8_10
  • RHSA-2026:23259 Released 2026-06-04 · Red Hat rating Important
    kernel-rt security update
    • Red Hat Enterprise Linux NFV (v. 8) kernel-rt-4.18.0-553.129.1.rt7.470.el8_10, kernel-rt-core-4.18.0-553.129.1.rt7.470.el8_10, kernel-rt-debug-4.18.0-553.129.1.rt7.470.el8_10 +9
    • Red Hat Enterprise Linux RT (v. 8) kernel-rt-4.18.0-553.129.1.rt7.470.el8_10, kernel-rt-core-4.18.0-553.129.1.rt7.470.el8_10, kernel-rt-debug-4.18.0-553.129.1.rt7.470.el8_10 +7

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
NVIDIA for RHEL 10Fixed RHSA-2026:23395, RHSA-2026:33486
Red Hat CodeReady Linux Builder EUS (v.9.6)Fixed RHSA-2026:27708
Red Hat Enterprise Linux AppStream (v. 10)Fixed RHSA-2026:23329
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2026:24381
Red Hat Enterprise Linux AppStream E4S (v.9.2)Fixed RHSA-2026:26515
Red Hat Enterprise Linux AppStream E4S (v.9.4)Fixed RHSA-2026:27735
Red Hat Enterprise Linux AppStream EUS (v. 10.0)Fixed RHSA-2026:25908
Red Hat Enterprise Linux AppStream EUS (v.9.6)Fixed RHSA-2026:27708
Red Hat Enterprise Linux BaseOS (v. 10)Fixed RHSA-2026:23329, RHSA-2026:33225
Red Hat Enterprise Linux BaseOS (v. 8)Fixed RHSA-2026:23258, RHSA-2026:33220
Red Hat Enterprise Linux BaseOS (v. 9)Fixed RHSA-2026:24381, RHSA-2026:33224
Red Hat Enterprise Linux BaseOS AUS (v.8.4)Fixed RHSA-2026:26535
Red Hat Enterprise Linux BaseOS AUS (v.8.6)Fixed RHSA-2026:26570
Red Hat Enterprise Linux BaseOS E4S (v.8.8)Fixed RHSA-2026:26563, RHSA-2026:33219
Red Hat Enterprise Linux BaseOS E4S (v.9.2)Fixed RHSA-2026:26515, RHSA-2026:33221
Red Hat Enterprise Linux BaseOS E4S (v.9.4)Fixed RHSA-2026:27735, RHSA-2026:33222
Red Hat Enterprise Linux BaseOS EUS (v. 10.0)Fixed RHSA-2026:25908
Red Hat Enterprise Linux BaseOS EUS (v.9.6)Fixed RHSA-2026:27708, RHSA-2026:33223
Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4)Fixed RHSA-2026:26535
Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.6)Fixed RHSA-2026:26570
Red Hat Enterprise Linux BaseOS TUS (v.8.8)Fixed RHSA-2026:26563
Red Hat Enterprise Linux CRB (v. 8)Fixed RHSA-2026:23258
Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)Fixed RHSA-2026:23329
Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)Fixed RHSA-2026:24381
Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0)Fixed RHSA-2026:25908
Red Hat Enterprise Linux NFV (v. 8)Fixed RHSA-2026:23259
Red Hat Enterprise Linux RT (v. 8)Fixed RHSA-2026:23259
Red Hat Enterprise Linux Real Time (v. 10)Fixed RHSA-2026:23329
Red Hat Enterprise Linux Real Time (v. 9)Fixed RHSA-2026:24381
Red Hat Enterprise Linux Real Time E4S (v.9.2)Fixed RHSA-2026:26462
Red Hat Enterprise Linux Real Time E4S (v.9.4)Fixed RHSA-2026:27735
Red Hat Enterprise Linux Real Time EUS (v. 10.0)Fixed RHSA-2026:25908
Red Hat Enterprise Linux Real Time EUS (v.9.6)Fixed RHSA-2026:27708
Red Hat Enterprise Linux Real Time for NFV (v. 10)Fixed RHSA-2026:23329
Red Hat Enterprise Linux Real Time for NFV (v. 9)Fixed RHSA-2026:24381
Red Hat Enterprise Linux Real Time for NFV E4S (v.9.2)Fixed RHSA-2026:26462
Red Hat Enterprise Linux Real Time for NFV E4S (v.9.4)Fixed RHSA-2026:27735
Red Hat Enterprise Linux Real Time for NFV EUS (v. 10.0)Fixed RHSA-2026:25908
Red Hat Enterprise Linux Real Time for NFV EUS (v.9.6)Fixed RHSA-2026:27708
Red Hat Enterprise Linux Server (v. 7 ELS)Fixed RHSA-2026:27729
Red Hat Enterprise Linux Server -EXTENSION(v. 6 ELS-EXTENSION)Fixed RHSA-2026:27719
Red Hat Enterprise Linux Server Optional (v. 7 ELS)Fixed RHSA-2026:27729
Red Hat Enterprise Linux Server Optional -EXTENSION (v. 6 ELS -EXTENSION)Fixed RHSA-2026:27719
Red Hat Enterprise Linux for Real Time (v. 7 ELS)Fixed RHSA-2026:41236
Red Hat OpenShift Container Platform 4.12Fixed RHSA-2026:34048
Red Hat OpenShift Container Platform 4.13Fixed RHSA-2026:40021
Red Hat OpenShift Container Platform 4.14Fixed RHSA-2026:28887
Red Hat OpenShift Container Platform 4.15Fixed RHSA-2026:28962
Red Hat OpenShift Container Platform 4.16Fixed RHSA-2026:36620
Red Hat OpenShift Container Platform 4.17Fixed RHSA-2026:47727
Red Hat OpenShift Container Platform 4.18Fixed RHSA-2026:34815
Red Hat OpenShift Container Platform 4.19Fixed RHSA-2026:34757
Red Hat OpenShift Container Platform 4.20Fixed RHSA-2026:34788
Red Hat OpenShift Container Platform 4.21Fixed RHSA-2026:34764

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-46243
  2. 2026-10-03 Alias added: GHSA-3mg7-pfmq-9qfv
  3. 2026-10-09 Affected versions changed · Red Hat

References

Patch 8

Advisory 2

  • TI-2025-26358 tls: fix handling of zero-length records on the rx_list KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-38352 netfilter: bridge: make ebt_snat ARP rewrite writable KEVCVSS 3.1HIGH 8.8
  • TI-2013-05264 The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the… KEVCVSS 3.1HIGH 8.8
  • TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
  • TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
  • TI-2021-05514 Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE KEVCVSS 3.1HIGH 8.3
See all 15278 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences